Archive for November, 2009

Not enough shut-eye may raise diabetes risk

Wednesday, November 25th, 2009

An inadequate amount of nightly sleep on a recurring basis, coupled with a sedentary lifestyle and overeating, may fuel the development of diabetes, results of a new study hint.

“Our findings suggest that combining the unhealthy aspects of the Westernized lifestyle with insufficient sleep may add to the risk of overweight and sedentary individuals to develop diabetes,” Dr. Plamen Penev, of the University of Chicago, Illinois, and a senior author of the study, told Reuters Health.

Penev and colleagues subjected 11 healthy but sedentary middle-aged men and women to two 14-day periods of sedentary living with free access to food and either 5.5 hours or 8.5 hours of sleep each night.

As nightly sleep times changed from 8.5 to 5.5 hours, the participants went to bed later and got out of bed earlier and, as a result, average sleep duration was reduced by about two hours a day.

When the adults had their bedtimes decreased from a healthy 8.5 hours to 5.5 hours they showed changes in their response to two common sugar tests, which were similar to those seen in people with an increased risk of developing diabetes.

“If confirmed by future larger studies,” Penev told Reuters Health, “these results would indicate that a healthy lifestyle should include not only healthy eating habits and adequate amounts of physical activity, but also obtaining a sufficient amount of sleep.”

Scientists Reverse Multiple Sclerosis in Mice

Wednesday, November 18th, 2009

An experimental treatment that suppresses the immune system to put multiple sclerosis into remission completely reversed the disease in mice, Canadian scientists say.

In MS, the immune system attacks the central nervous system. The new treatment, called GIFT15, is composed of two proteins, GSM-CSF and interleukin-15, that are fused in the lab. Normally, the individual proteins act to stimulate the immune system, but when they’re stuck together, the proteins suppress immune response, the researchers explained.

They do this by converting B-cells — a type of white blood cell normally involved in immune response — into immune suppressive cells.

“GIFT15 can take your normal, run-of-the-mill B-cells and convert them … into these super-powerful B-regulatory cells,” study team leader Dr. Jacques Galipeau, of the Jewish General Hospital Lady Davis Institute for Medical Research and McGill University in Montreal, said in a university news release.

He and his colleagues took normal B-cells from mice and sprinkled GIFT15 on the B-cells. “And when we gave them back intravenously to mice ill with multiple sclerosis, the disease went away,” Galipeau said.

The treatment was fully effective with a single dose, and no significant side effects were seen in the mice, the researchers reported.

For Macho Men, Doctor Visits Are Less Likely

Wednesday, November 11th, 2009

It’s no secret that men don’t like to go to the doctor, but new research finds they’re especially likely to stay home if they’re big on being macho.

Middle-aged men who are most devoted to traditional beliefs about masculinity are half as likely as other men to get routine medical care, researchers report.

It’s not clear whether feelings about masculinity directly make men avoid doctor visits; the study only indicates that a cause-and-effect link might exist. Nor do researchers know what this might mean for men’s health.

Still, the findings suggest that “we could help men’s health if we could dismantle this idea that manhood and masculinity is about being invulnerable, not needing help and not showing pain,” said study author Kristen W. Springer, an assistant professor of sociology at Rutgers, the State University of New Jersey.

Previous research has suggested that “men are less likely to go to the doctor than women, across the board,” Springer said — a notion she finds surprising because men are wealthier overall, potentially giving them better access to medical care.

Springer and a colleague launched their study to determine the role that ideas about masculinity play in the decisions men make about their health care.

Springer said she defines masculinity as a “stereotypical, old-school, John Wayne- and Sylvester Stallone-style” approach to life.

The researchers examined the results of surveys taken in 2004 by 1,000 white, middle-aged men in Wisconsin. The men answered questions about their beliefs regarding masculinity and disclosed whether they’d gotten recommended annual physicals, prostate checks and flu shots.

After adjusting the results to reduce the chance they would be thrown off by such things as a high number of married participants, researchers found that men who were the highest believers in masculine standards were 50 percent less likely to get the recommended care than other men.

Springer was unable to provide statistics about the percentage of men in each group who got the recommended care. Overall, though, fewer than half of all men did, according to the study.

There was one exception to the rule: Blue-collar workers who had a high attachment to masculinity were more likely to get the recommended health care.

The study has limitations. All participants were white, and all had completed high school. And Springer said unanswered questions remain, such as whether spouses play a role through “support or nagging.”

The findings were to be presented Monday at the American Sociological Association annual meeting in San Francisco.

Howard S. Friedman, a professor of psychology at the University of California at Riverside, said his research has found that less masculine men live longer than masculine men. But the new study doesn’t show anything like that because it doesn’t examine long-term effects on health, he said.

As for the gap between men and women when it comes to living longer, he said, “it would be a stretch, going beyond the data, to link it closely to men’s increased mortality risk as compared to women.”

Health Tip: Staying Safe on the Playground

Wednesday, November 4th, 2009

Playgrounds are great sources of fun for children — as long as they’re safe.

The U.S. National Safety Council says parents should inspect playgrounds before their children use them for the following safety features:
A soft ground surface such as mulch, sand, wood chips, rubber mats or shredded tires, instead of concrete, grass or dirt.
Soft swing seats, and swings that are set apart from other playground equipment. Look for full-bucket seats rather than partial ones that children could slide out of.
Slides that are firmly anchored to the ground with sturdy handrails and traction on the stairs. A bar at the top of every slide should force children to sit down.
Seesaws that are spring-loaded, instead of adjustable seesaws with chains.
Climbing equipment that is well secured and has sturdy handrails and steps.